In the second paragraph. the author uses the example of” You’re a lucky dog” to show that . ( )(本题1.5分)

A、 the speaker of this sentence is just being friendly
B、 his saying means the same as "You.re a lucky guy" or "You.re a lucky gal"
C、 sometimes the words used by a speaker give a clue to the feeling behind the words
D、 the word "dog" shouldn.t be used to apply to people